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#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#
import os, connection, session
from util import notify
from datatypes import RangedSet
from exceptions import VersionError
from logging import getLogger
from ops import Control
import sys
log = getLogger("qpid.io.ctl")
class Delegate:
def __init__(self, connection, delegate=session.client):
self.connection = connection
self.delegate = delegate
def received(self, op):
ssn = self.connection.attached.get(op.channel)
if ssn is None:
ch = connection.Channel(self.connection, op.channel)
else:
ch = ssn.channel
if isinstance(op, Control):
log.debug("RECV %s", op)
getattr(self, op.NAME)(ch, op)
elif ssn is None:
ch.session_detached()
else:
ssn.received(op)
def connection_close(self, ch, close):
self.connection.close_code = (close.reply_code, close.reply_text)
ch.connection_close_ok()
self.connection.sock.close()
if not self.connection.opened:
self.connection.failed = True
notify(self.connection.condition)
def connection_close_ok(self, ch, close_ok):
self.connection.opened = False
self.connection.closed = True
notify(self.connection.condition)
def connection_heartbeat(self, ch, hrt):
pass
def session_attach(self, ch, a):
try:
self.connection.attach(a.name, ch, self.delegate, a.force)
ch.session_attached(a.name)
except connection.ChannelBusy:
ch.session_detached(a.name)
except connection.SessionBusy:
ch.session_detached(a.name)
def session_attached(self, ch, a):
notify(ch.session.condition)
def session_detach(self, ch, d):
#send back the confirmation of detachment before removing the
#channel from the attached set; this avoids needing to hold the
#connection lock during the sending of this control and ensures
#that if the channel is immediately reused for a new session the
#attach request will follow the detached notification.
ch.session_detached(d.name)
ssn = self.connection.detach(d.name, ch)
def session_detached(self, ch, d):
self.connection.detach(d.name, ch)
def session_request_timeout(self, ch, rt):
ch.session_timeout(rt.timeout);
def session_command_point(self, ch, cp):
ssn = ch.session
ssn.receiver.next_id = cp.command_id
ssn.receiver.next_offset = cp.command_offset
def session_completed(self, ch, cmp):
ch.session.sender.completed(cmp.commands)
if cmp.timely_reply:
ch.session_known_completed(cmp.commands)
notify(ch.session.condition)
def session_known_completed(self, ch, kn_cmp):
ch.session.receiver.known_completed(kn_cmp.commands)
def session_flush(self, ch, f):
rcv = ch.session.receiver
if f.expected:
if rcv.next_id == None:
exp = None
else:
exp = RangedSet(rcv.next_id)
ch.session_expected(exp)
if f.confirmed:
ch.session_confirmed(rcv._completed)
if f.completed:
ch.session_completed(rcv._completed)
class Server(Delegate):
def start(self):
self.connection.read_header()
# XXX
self.connection.write_header(0, 10)
connection.Channel(self.connection, 0).connection_start(mechanisms=["ANONYMOUS"])
def connection_start_ok(self, ch, start_ok):
ch.connection_tune(channel_max=65535)
def connection_tune_ok(self, ch, tune_ok):
pass
def connection_open(self, ch, open):
self.connection.opened = True
ch.connection_open_ok()
notify(self.connection.condition)
class Client(Delegate):
ppid = 0
try:
ppid = os.getppid()
except:
pass
PROPERTIES = {"product": "qpid python client",
"version": "development",
"platform": os.name,
"qpid.client_process": os.path.basename(sys.argv[0]),
"qpid.client_pid": os.getpid(),
"qpid.client_ppid": ppid}
def __init__(self, connection, username="guest", password="guest",
mechanism="PLAIN", heartbeat=None):
Delegate.__init__(self, connection)
self.username = username
self.password = password
self.mechanism = mechanism
self.heartbeat = heartbeat
def start(self):
# XXX
cli_major = 0
cli_minor = 10
self.connection.write_header(cli_major, cli_minor)
magic, _, _, major, minor = self.connection.read_header()
if not (magic == "AMQP" and major == cli_major and minor == cli_minor):
raise VersionError("client: %s-%s, server: %s-%s" %
(cli_major, cli_minor, major, minor))
def connection_start(self, ch, start):
r = "\0%s\0%s" % (self.username, self.password)
ch.connection_start_ok(client_properties=Client.PROPERTIES, mechanism=self.mechanism, response=r)
def connection_tune(self, ch, tune):
ch.connection_tune_ok(heartbeat=self.heartbeat)
ch.connection_open()
def connection_open_ok(self, ch, open_ok):
self.connection.opened = True
notify(self.connection.condition)
def connection_heartbeat(self, ch, hrt):
ch.connection_heartbeat()
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